Shareholders' Equity (Detail Textuals 2) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net Of Tax	$ (12,000)	$ (59,000)
Tax benefit for retirement benefits adjustment	14,000	26,000
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Estimated future annual expenses included in accumulated other comprehensive loss, net of deferred taxes	22,000	40,000
Income tax benefit of estimated future annual expenses included in accumulated other comprehensive loss	$ 7,400	$ 14,000